Leithwood, K. A., Clipsham, J. S., & Davies, C. (1974). The individualized system: Courses and patterns of student choice. Ontario Institute for Studies in Education.
Dyfyniad Arddull ChicagoLeithwood, Kenneth A., John S. Clipsham, and Cheryl Davies. The Individualized System: Courses and Patterns of Student Choice. Toronto: Ontario Institute for Studies in Education, 1974.
Dyfyniad MLALeithwood, Kenneth A., et al. The Individualized System: Courses and Patterns of Student Choice. Ontario Institute for Studies in Education, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.